NCERT Solutions for Class 8 Social Science Resources and Development Chapter 3

Mineral and Power Resources Class 8

Chapter 3 Mineral and Power Resources Exercise Solutions

<< Previous Chapter 2 : Land, Soil, Water, Natural Vegetation and Wildlife Resources Next Chapter 4 : Agriculture >>

Exercise : Solutions of Questions on Page Number : 37

Q1 :  

Answer the following questions.

(i) Name any three common minerals used by you everyday.

(ii) What is an ore? Where are the ores of metallic minerals generally located?

(iii) Name two regions rich in natural gas resources.

(iv) Which sources of energy would you suggest for

(a) Rural areas

(b) Coastal areas

(c) Arid regions

(v) Give five ways in which you can save energy at home.


Answer :

(i) Three common minerals used every day:

(a) Copper - Electric wires

(b) Talc - Talcum powder

(c) Lead - Batteries

(ii)Ores are the rocks from which minerals are mined. The ores of metallic minerals are generally found in igneous and metamorphic rock formations that form large plateaus.

(iii)Russia and the United Kingdom are the two regions rich in natural gas resources.

(iv)

(a) Biogas energy for rural areas

(b) Hydel and tidal energy for coastal areas

(c) Wind and solar energy for arid regions

(v) Five ways in which energy can be saved at home:

(a) Switching off lights, fans and other electrical appliances when not in use

(b) By seeing to it that electrical devices are operating efficiently; for example, defrosting refrigerator regularly and not keeping the refrigerator door open for longer than necessary

(c) Using energy-efficient devices such as fluorescent bulbs and tubes

(d) Using energy efficiently while cooking; for example, keeping the lids of pans on while cooking

(e) Unplugging electrical devices when not in use prevents leakage of electricity; thus saving energy

Answer needs Correction? Click Here

Q2 :  

Tick the correct answer.

(i) Which one of the following is nota characteristic of minerals?

(a) They are created by natural processes.

(b) They have a definite chemical composition.

(c) They are inexhaustible.

(d) Their distribution is uneven.

(ii) Which one of the following is nota producer of mica?

(a) Jharkhand

(c) Rajasthan

(b) Karnataka

(d) Andhra Pradesh

(iii) Which one of the following is a leading producer of copper in the world?

(a) Bolivia

(c) Chile

(b) Ghana

(d) Zimbabwe

(iv) Which one of the following practises will notconserve LPG in your kitchen?

(a) Soaking the dal for some time before cooking it.

(b) Cooking food in a pressure cooker.


Answer :

(i)Which one of the following is nota characteristic of minerals?

(a) They are created by natural processes.

(b) They have a definite chemical composition.

(c) They are inexhaustible.

(d) Their distribution is uneven.

(ii)Which one of the following is nota producer of mica?

(a) Jharkhand

(c) Rajasthan

(b) Karnataka

(d) Andhra Pradesh

(iii)Which one of the following is a leading producer of copper in the world?

(a) Bolivia

(c) Chile

(b) Ghana

(d) Zimbabwe

(iv)Which one of the following practises will notconserve LPG in your kitchen?

(a) Soaking the dal for some time before cooking it.

(b) Cooking food in a pressure cooker.

(c) Keeping the vegetables chopped before lighting the gas for cooking.

(d) Cooking food in an open pan kept on low flame.

Answer needs Correction? Click Here

Q3 :  

Give reasons.

(i) Environmental aspects must be carefully looked into before building huge dams.

(ii) Most industries are concentrated around coal mines.

(iii) Petroleum is referred to as “black gold”.

(iv) Quarrying can become a major environmental concern.


Answer :

Please Register/Login to get access to all solutions Facebook Login
Q4 :  

Distinguish between the following.

(i) Conventional and non-conventional sources of energy

(ii) Biogas and natural gas

(iii) Ferrous and non-ferrous minerals

(iv) Metallic and non-metallic minerals


Answer :

Please Register/Login to get access to all solutions Facebook Login
<< Previous Chapter 2 : Land, Soil, Water, Natural Vegetation and Wildlife Resources Next Chapter 4 : Agriculture >>

Resources and Development - Social Science : CBSE NCERT Exercise Solutions for Class 8th for Mineral and Power Resources will be available online in PDF book form soon. The solutions are absolutely Free. Soon you will be able to download the solutions.

Popular Articles